I've noticed that Lightroom CC Mobile's Best Photos technology preview has stopped working this week. Is this happening with anyone else?

On my Samsung Android tablet running Lightroom Android v4.0, tapping on Best Photos in any album/folder just displays the 'Analyzing Photos...' graphic for an extremely long time without any result.

On Lightroom for Web (on updated versions of both Firefox and Chrome browsers on a Mac), it displays more 'Analyzing ...' status messages (e.g. composition, depth of field, lighting) before failing with the following message (see attached screenshot).

I've tried disabling/enabling Tech Previews and discarding/creating Smart Previews, and trying it on folders with a few photos to those with many, all with the same result.

Thanks, Alex! It's now working on LR CC on my Android tablet, but is still not working on my iMac via the Chrome (7.0.3538.77) & Firefox (63.0.1) browsers. When I try running it on lightroom(dot)adobe(dot)com I now get more status messages (e.g. "Comparing depth of field...") but then it still displays the above error message after the intriguing status message of: "Reticulating splines..."